Discontinued Operations (Details) (USD $)	1 Months Ended		3 Months Ended	12 Months Ended
	Oct. 31, 2011	Aug. 31, 2008	Jun. 30, 2011	Dec. 31, 2011 Installment	Dec. 31, 2010	Dec. 31, 2009
Discontinued Operations (Textual) [Abstract]
Sale Proceeds from disposal of Properties	$ 48,800,000	$ 15,000,000	$ 15,000,000
Capitalized cost of assets held for sale			600,000
Number of installments in which proceeds from divestiture of businesses to be received				3
Period after which first installment received		9 months
Period after which second installment received		18 months
Period after which third installment received		30 months
Amount per installment to be received from divestiture of business		5,000,000
Income (Loss) from discontinued operations, net of taxes				14,211,000	(181,000)	(254,000)
Discontinued operations, basic and diluted per share				$ 0.33	$ 0.00	$ 0.01
Cash provided by (used in) operating activities - discontinued operations less than				$ (2,000)	$ (41,000)	$ (396,000)